No, unless you write the app yourself. (You can't "change" a compiled app very easily, and if you had enough experience in Java that you could you wouldn't be asking here.)

Of course if you disable the security and someone gets your phone for even a few minutes, you could find yourself with an empty bank account, or a huge credit card bill. If you get a phone with a fingerprint scanner, you can secure the app with your fingerprint, so it's really no problem. (Unless someone duplicates your fingerprint, but we're still a few years away from when how to do that becomes common knowledge - and they'll probably change the fingerprint scanners to defeat that when it does.)

No, unless you write the app yourself. (You can't "change" a compiled app very easily, and if you had enough experience in Java that you could you wouldn't be asking here.)

Of course if you disable the security and someone gets your phone for even a few minutes, you could find yourself with an empty bank account, or a huge credit card bill. If you get a phone with a fingerprint scanner, you can secure the app with your fingerprint, so it's really no problem. (Unless someone duplicates your fingerprint, but we're still a few years away from when how to do that becomes common knowledge - and they'll probably change the fingerprint scanners to defeat that when it does.)

The app that requires a secured login doesn't really have sensitive information. It's just my schedule for work.